CN101646229B - Method for acquiring transmission power control command, acquisition preprocessing method, and mobile terminal - Google Patents
Method for acquiring transmission power control command, acquisition preprocessing method, and mobile terminal Download PDFInfo
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Abstract
The invention discloses a method for acquiring a transmission power control command, an acquisition preprocessing method, and a mobile terminal. The acquiring method comprises that: a terminal acquires a power control step parameter through a broadcast system message and determines the format of an uplink power control group signal through the power control step parameter; the terminal acquires a wireless network temporary group identifier required for detecting the uplink power control group signaling comprising the power control command through a high-level signaling; the terminal acquires index information for identifying the position of the transmission power control command of the terminal in the uplink power control group signaling through the high-level signaling or pre-treatment; and the terminal acquires a transmission power control command belonging to the terminal from the uplink power control group signaling according to the determined format of the uplink power control group signaling, the wireless network temporary group identifier and the index information. The invention enables the base station to realize effective and flexible uplink power control.
Description
Technical field
The present invention relates to the communications field, particularly, relate to the transmission power control command acquisition methods and obtain preprocess method and a kind of portable terminal.
Background technology
At present, the frame structure of Long Term Evolution (Long Term Evolution abbreviates LTE as) system is divided into Type 1 and 2 two types of Type; Wherein, Type 1 frame structure is applied to mode of frequency division duplexing (Frequency division duplex abbreviates FDD as), and Type 2 frame structures are applied to TDD mode (Time division duplex; Abbreviate TDD as), as depicted in figs. 1 and 2 respectively.
Particularly, as shown in Figure 1, in the LTE frame structure, the radio frames of a 10ms is divided into the field of two 5ms, and each field is made up of the subframe of 5 1ms.Except that the special subframe of Type2 frame structure, other subframe all is made up of the time slot of two 0.5ms.For example, subframe #0 comprises time slot #0 and time slot # 1, and subframe # 1 comprises time slot #2 and time slot #3 .... subframe #9 comprises time slot # 18 and time slot #19.As shown in Figure 2; Special subframe among the Type 2 (for example; Subframe #1) by descending pilot frequency time slot (Downlink Pilot Time Slot; Abbreviate DwPTS as), protection at interval these 3 special time slots of (Guard Period abbreviates GP as) and uplink pilot time slot (Uplink Pilot Time Slot abbreviates UpPTS as) form.
In the LTE frame structure, on one/duration of descending symbol is 66.7us, on each/all can attach a Cyclic Prefix (Cyclic Prefix abbreviates CP as) before the descending symbol.Particularly, two kinds of Cyclic Prefix have been defined among the LTE, promptly; Regular circulation prefix (NormalCP) and extended cyclic prefix (Extended CP); For length is the regular circulation prefix of 5.21us and 4.69us, and time slot comprises on 7/descending symbol, wherein; The circulating prefix-length of the 1st symbol is 5.21us, and the circulating prefix-length of all the other 6 symbols is 4.69us; For length is the extended cyclic prefix of 16.67us, and time slot comprises on 6/descending symbol.
Physical Downlink Control Channel (Physical downlink control channel; Abbreviating PDCCH as) the descending symbolic number that comprised is by Physical Control Format Indicator Channel (Physicalcontrol format indication channel; Abbreviate PCFICH as) indication, can be 1,2 or 3 descending symbols.PDCCH is used to transmit Downlink Control Information (DownlinkControl Information; Abbreviate DCI as); The form of Downlink Control Information (DCIformat) comprises format 0, format 1, format 1A, format 1B, format 1C, format 2, format 3, format 3A, is used to transmit different classes of Downlink Control Information.Every kind of DCI signaling format all can attach cyclic redundancy check (the CyclicRedundancy Check of 16 bits; Abbreviate CRC as); Each CRC can be through corresponding Radio Network Temporary Identifier (the Radio Network Temporary Identity of implicit coded system; Abbreviate RNTI as), the terminal is carried out blind Detecting according to RNTI to CRC then, obtains Downlink Control Information.
Wherein, the Downlink Control Information of DCI Format 3 and 3A is used for the base station and issues the group's signaling that is used for uplink power control.Particularly, DCI format 3 is used to transmit the Physical Uplink Control Channel (Physical Uplink Control channel abbreviates PUCCH as) or Physical Uplink Shared Channel (the Physical Uplink Shared channel of a group; Abbreviate PUSCH as) power control (Transmit Power Control; Abbreviate TPC as) order, this group's maximum can comprise the TPC order at M terminal (User Equipment abbreviates UE as); The TPC order size at each terminal is 2 bits; The terminal number M depends on the pay(useful) load size (Payload size) of DCI format 3, and this pay(useful) load is the bit number that total bit number that DCI format 3 comprises deducts CRC, and the command format of DCI format 3 is equivalent to { TPC_UE1; TPC UE2; ... TPC_UEM, CRC}, M equal the pay(useful) load size and remove in the integer part of 2 values.DCI Format 3A also is used to transmit the PUCCH of a group or the TPC of PUSCH orders; This group's maximum can comprise the TPC order of N UE, and the TPC order size at each terminal is 1 bit, and terminal number N then depends on the pay(useful) load size of DCI format 3A; This pay(useful) load is the bit number that total bit number that DCI format 3A comprises deducts CRC; The command format of DCI format3A be equivalent to TPC_UE1, TPC UE2 ... TPC_UEN; CRC}, N equal the bit number of pay(useful) load.In the present LTE system, the pay(useful) load equal and opposite in direction of DCI format 3 and format 3A.
So; In order to realize group's power control of up PUCCH or PUSCH; Base station need be divided into groups in the terminal in the sub-district (is one group with M terminal or N terminal) is so that according to the mode of the group uplink transmission power control command through Format 3 or 3A notice terminal.But, also do not provide the terminal how from DCI format 3/3A, to obtain the approach of one's own power control command at present.
Summary of the invention
How from DCI format3/3A, to obtain this problem of one's own transmission power control command for the terminal and do not have the problem of solution and propose the present invention in view of what exist in the correlation technique; For this reason; The present invention aims to provide a kind of transmission power control command acquisition methods and transmission power control command obtains preprocess method and portable terminal, in order to address the above problem.
According to an aspect of the present invention; A kind of transmission power control command acquisition methods is provided; Based on uplink power control group signaling mechanism; This method comprises: the terminal obtains the power control step-size parameter through the system message of broadcasting, and confirms the form of uplink power control group signaling through the power control step-size parameter; The terminal obtains through high-level signaling and detects the required interim group identification of wireless network of uplink power control group signaling that comprises its power control command; The terminal obtains the transmission power control command that the is used for marking terminal index information in the position of uplink power control group signaling through high-level signaling or predetermined process; The terminal obtains the transmission power control command that belongs to the terminal according to the interim group identification of form, wireless network and the index information of the uplink power control group signaling of confirming from uplink power control group signaling.
According to another aspect of the invention; Provide a kind of transmission power control command to obtain preprocess method; Based on uplink power control group signaling mechanism; This preprocess method comprises: to the terminal broadcast system message, and in system message, carry the power control step-size parameter, the power control step-size parameter is used for the form that uplink power control group signaling is confirmed at the terminal; Send high-level signaling to the terminal, and in high-level signaling, carry and be used for detecting the required interim group identification of wireless network of uplink power control group signaling and be used for the index information of the transmission power control command of marking terminal in the position of uplink power control group signaling.
According to another aspect of the invention; Provide a kind of transmission power control command to obtain preprocess method; Based on uplink power control group signaling mechanism; This preprocess method comprises: to the terminal broadcast system message, and in system message, carry the power control step-size parameter, the power control step-size parameter is used for the form that uplink power control group signaling is confirmed at the terminal; Send high-level signaling to the terminal, and in high-level signaling, carry and be used to detect the required interim group identification of wireless network of uplink power control group signaling; Send terminal iidentification to the terminal; So that index information is confirmed according to the maximum terminal quantity in terminal iidentification and the pairing group of signaling of uplink power control group in the terminal; Wherein, index information is used for the position of the transmission power control command of marking terminal in uplink power control group signaling.
In accordance with a further aspect of the present invention, a kind of portable terminal is provided, has comprised: first acquisition module is used for obtaining the power control step-size parameter through the system message of broadcasting; First determination module is used for confirming through the power control step-size parameter of obtaining the form of uplink power control group signaling; Second acquisition module is used for obtaining the required interim group identification of wireless network of uplink power control group signaling that detection comprises its power control command through high-level signaling; The 3rd acquisition module is used for obtaining the transmission power control command that the is used for marking terminal index information in the position of uplink power control group signaling through high-level signaling or predetermined process; The 4th acquisition module, the index information that the form that is used for confirming according to first determination module, the interim group identification of wireless network that second acquisition module obtains and the 3rd acquisition module obtain obtains the transmission power control command that belongs to portable terminal from uplink power control group signaling.
Through the present invention; How from DCI format3/3A, to obtain this problem of one's own transmission power control command for the terminal and provided solution; Make the terminal can from the uplink power control group signaling that the base station issues, obtain the power control signaling of oneself accurately and effectively, thereby make the base station can realize effective and flexible uplink power control.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used to explain the present invention with embodiments of the invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the frame structure sketch map according to the LTE Type 1 of prior art;
Fig. 2 is the frame structure sketch map according to the LTE Type 2 of prior art;
Fig. 3 is the flow chart according to the transmission power control command acquisition methods of the embodiment of the invention;
Fig. 4 is the flow chart that obtains preprocess method according to the transmission power control command of the embodiment of the invention;
Fig. 5 is the flow chart that obtains preprocess method according to another transmission power control command of the embodiment of the invention;
Fig. 6 is the preferred structure block diagram according to the portable terminal of the embodiment of the invention;
Fig. 7 is the process chart according to the instance 1 of the transmission power control command acquisition methods of the embodiment of the invention;
Fig. 8 is the process chart according to the instance 2 of the transmission power control command acquisition methods of the embodiment of the invention;
Fig. 9 is the process chart according to the instance 3 of the transmission power control command acquisition methods of the embodiment of the invention.
Embodiment
Functional overview
As stated; For present uplink power control group signaling mechanism; Also do not provide relevant terminal how to confirm the solution of one's own power control command; For this reason; The invention provides terminal under a kind of uplink power control group signaling mechanism and confirm the method for one's own power control command; This method mainly mechanism such as position of transmission power control command in uplink power control group signaling at form, the interim group identification of wireless network (Group-RNTI) of confirming the terminal and then the definite terminal through confirming uplink power control group signaling realizes, makes the terminal from the power control group signaling that the base station issue, to confirm accurately and effectively and obtains the power control command of oneself, thereby make the base station can carry out uplink power control flexibly and effectively.Hereinafter; To be that example is described the present invention with the power control group signaling of DCI format 3/3A; But, can solve the problem of the position of the control channel of confirming the terminal under other power control group signaling scenes equally by means of thought of the present invention.
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
In order to realize that TPC obtains, the embodiment of the invention at first provides a kind of portable terminal, and Fig. 3 has provided the preferred structure block diagram of this portable terminal.As shown in Figure 3, this portable terminal specifically comprises: first acquisition module, 30, the first determination modules, 32, the second acquisition modules, 34, the three acquisition modules, 36, the second determination modules 38.The following specifically describes the details of each module.
First acquisition module 30 is used for obtaining the power control step-size parameter through the system message (for example, system message 2) of broadcasting; First determination module 32 is connected to first acquisition module 30, is used for confirming through the power control step-size parameter that first acquisition module 30 obtains the form (Format 3/3A) of uplink power control group signaling.
Second acquisition module 34 is used for obtaining the required interim group identification of wireless network (Group-RNTI) of uplink power control group signaling that detection comprises its power control command through high-level signaling.
The 3rd acquisition module 36 is used for obtaining the through-put power control (TPC) that is used for marking terminal through high-level signaling or predetermined process orders the index information in the position of uplink power control group signaling.
The 4th acquisition module 38 is connected to first determination module 32; Second acquisition module 34 and the 3rd acquisition module 36, the index information that the form that is used for confirming according to first determination module 32, the Group-RNTI that second acquisition module 34 obtains and the 3rd acquisition module 36 obtain obtains the position of TPC order uplink power control group signaling that belongs to portable terminal from uplink power control group signaling.
Wherein, the 3rd acquisition module preferably has following structure again: obtain submodule, being used to obtain the base station is the terminal iidentification that portable terminal distributes; Confirm submodule, be used for confirming the maximum terminal quantity that uplink power control group signaling can be carried according to the pay(useful) load of uplink power control group signaling and the form of uplink power control group signaling; Calculating sub module is connected to and obtains submodule and definite submodule, is used to use terminal iidentification that maximum terminal quantity is carried out modulo operation, and confirms index information according to the result of modulo operation.The 3rd acquisition module also can directly obtain index information through high-level signaling.
Expect that easily each above-mentioned module both can be provided with separately each other, can unify setting, for example, above-mentioned first acquisition module and second acquisition module can be unified setting, are used for realizing obtaining function.Therefore, the portable terminal of the embodiment of the invention can have multiple variant based on design of the present invention.
Based on above-mentioned portable terminal, according to the embodiment of the invention, a kind of transmission power control command (TPC perhaps is called the transmission power control signaling) acquisition methods is provided also, this method is based on uplink power control group signaling mechanism.Fig. 4 has provided the roughly handling process of this method, and is as shown in Figure 4, comprises following processing (step S402-step S408):
Step S402; The terminal obtains power control step-size (TPCstep size) parameter through the system message of broadcasting; And confirm the form of uplink power control group signaling through the power control step-size parameter; Particularly, confirm that uplink power control group signaling is to adopt the Downlink Control Information (DCI format 3) of form 3 still to adopt the Downlink Control Information (DCIformat 3A) of form 3A.Operation in this step can use the first above-mentioned acquisition module 30 and first determination module 32 to realize.
Step S404, the terminal obtains through high-level signaling and detects the required interim group identification of wireless network (Group-RNTI) of uplink power control group signaling that comprises its power control command.Say that from logical perspective the terminal that is assigned identical Group-RNTI belongs in the same upload control group signaling, that is to say that one group of terminal that TPC belongs to same DCI format 3/3A signaling has identical Group-RNTI.Operation in this step can realize through the second above-mentioned acquisition module 34.
Step S406; The terminal through high-level signaling (the high-level signaling here preferably with step S404 in high-level signaling identical) or predetermined process obtain index information (also can be called group in index), this index information is used for the position of the TPC order of marking terminal at uplink power control group signaling (DCI format 3/3A).This step can realize through the 3rd above-mentioned acquisition module 36.
Step S408, the terminal obtains the TPC order that belongs to the terminal according to form, Group-RNTI and the index information of the uplink power control group signaling of confirming from uplink power control group signaling.This step can realize through the 4th above-mentioned acquisition module 38.
Through above-mentioned processing, make the terminal can confirm its position of TPC order in uplink power control group signaling, thereby be convenient to follow-up uplink power control.
The details of above-mentioned each processing below is described in further detail.
(1) step S402
In this step, the power control step-size parameter is semi-static configuration in base station side, and is broadcasted through system message by the base station.In the following time of situation of switching, this power control step-size parameter can send to the terminal through RRC reallocation message (RRC connectionreconfiguration) by Target cell.Further, this power control step-size parameter can be included in System information block 2 (System Information Block 2 is in ascending power common control information unit SIB2) (Uplink Power Control Common InformationUnit).
(2) step S404
Here the high-level signaling of mentioning can be Radio Resource control (Radio ResourceControl; Abbreviate RRC as) signaling or medium access control (Media AccessControl; Abbreviate MAC as) layer signaling; Wherein, the RRC signaling can be that RRC sets up message (RRC connection set up) or RRC reallocation message, be respectively applied for that RRC connect to set up, RRC reshuffles or the sub-district in/flow process of a switching in.When high-level signaling was the RRC signaling, Group-RNTI was included in the ascending power dedicated control information unit (Uplink Power Control Dedicated) of RRC signaling.
Group-RNTI can be divided into the Group-RNTI (can be described as TPC-PUCCH-RNTI) that identifies the DCI format3/3A that is used for the control of PUCCH power and identify the Group-RNTI (can be described as TPC-PUSCH-RNTI) of the DCI format 3/3A that is used for the control of PUSCH power.
Base station side is when sending; Can use different cells to carry TPC-PUCCH-RNTI and TPC-PUSCH-RNTI respectively; Promptly; Explicitly adopts the form of two parameters to notify respectively, and the terminal can judge that Group-RNTI is TPC-PUCCH-RNTI or TPC-PUSCH-RNTI according to the cell that receives when receiving like this; Perhaps, base station side also can be grouped into TPC-PUCCH-RNTI and TPC-PUSCH-RNTI with Group-RNTI in advance when sending; That is, presort group, and use same cell to carry; Promptly; Impliedly notify the terminal through a parameter, TPC-PUCCH-RNTI or TPC-PUSCH-RNTI can be confirmed according to the group under the Group-RNTI that receives in the terminal when receiving like this.
(3) step S406
Similarly; Be used for control of PUSCH power or the control of PUCCH power according to DCI format 3/3A, the index information of TPC order in the position of uplink power control group signaling that is used for marking terminal can be divided into PUCCH power control command index information (TPC-PUCCH-Index) and PUSCH power control command index information (TPC-PUSCH-Index).
As stated, obtaining of index information can have dual mode to realize at least, below describes respectively.
Mode one: obtain through high-level signaling
When obtaining through high-level signaling, index information is preferably included in the information unit of the high-level signaling identical with Group-RNTI, and adopts identical signaling method to notify to the terminal.
Index information can be represented the absolute position of TPC order in uplink power control group signaling at terminal with binary numeral; For example, index information is represented with 6 bits, and is represented first position from 000000; The index information that obtains of terminal is 000011 o'clock so; The TPC order of representing this terminal is for the 4th in the uplink power control group signaling of DCI format 3/3A, if DCI format 3 then is the 7th and the 8th bit; If be DCI format 3A, then be the 4th bit.
Notification procedure for index information; The base station can adopt two parameter TPC-PUCCH-Index and TPC-PUSCH-Index to notify respectively; Also can with the interior index TPC-PUSCH-Index of group identical value be set to index TPC-PUCCH-Index in the group at same terminal; That is, set the interior index of two groups and equate, notify to save the control signaling through a parameter TPC-Index.
To according to the implementation procedure of the embodiment of the invention under this mode, below obtain preprocess method through the TPC order embodiment further provided the processing procedure of base station side.Fig. 5 has provided the flow chart of this processing procedure, and is as shown in Figure 5, comprises following processing:
Step S502; The base station is to the terminal broadcast system message, and in system message, carries power control step-size parameter (TPC step size), for example; Can be at System information block 2 (SystemInformation Block 2; SIB2) carry the power control step-size parameter in the ascending power common control information unit, the terminal can use this power control step-size parameter to confirm the form of uplink power control group signaling, is Format 3 or Format 3A (with reference to above-mentioned steps S402).
Step S504; Send high-level signaling to the terminal, and in high-level signaling, carry the TPC that is used for detecting the required Group-RNTI of uplink power control group signaling and be used for marking terminal and order index information (perhaps being called index in the group) (with reference to above-mentioned steps S404 and step S406) in the position of uplink power control group signaling.For example, when high-level signaling is the RRC signaling,, RRC carries Group-RNTI and index information in setting up the ascending power dedicated control information unit of message or RRC reconfiguration message.
Mode two: obtain through predetermined process
In this case, the terminal can't directly obtain the index information of the position that is used to identify its TPC, but needs to obtain through intermediate treatment, and the mode of acquisition can have multiple, has below provided a kind of concrete implementation procedure.
The terminal at first obtains the terminal iidentification that is used for the marking terminal identity (the Cell-Radio Network Temporary Identity of base station assigns; Abbreviate C-RNTI as), the maximum number of terminals Nmax that can carry or comprise according to DCI format 3/3A then obtains index information.
Particularly; The terminal maximum number Nmax that can comprise according to DCI format 3/3A; Employing is to index in the method acquisition group of C-RNTI delivery; Be C-RNTI mod Nmax, Nmax is confirmed by the pay(useful) load P (not comprising CRC) and the form of the uplink power control group signaling of DCI format 3/3A.Need to prove; Suppose that TPC-PUCCH-Index and TPC-PUSCH-Index get identical value; Then when the form of confirming among the step S402 was DCIformat 3, TPC-PUCCH-Index equals TPC-PUSCH-Index and value is C-RNTI mod Nmax, Nmax=floor (P/2); Floor () expression rounds downwards; Then when the form of confirming among the step S402 was DCI format 3A, TPC-PUCCH-Index equals TPC-PUS CH-Index and value is C-RNTI mod Nmax, Nmax=P.
Need to prove, when adopting aforesaid way,, need in advance the C-RNTI at terminal among the DCIformat 3/3A is carried out restrictive management and group, guarantee that the mould of C-RNTI and Nmax at these terminals is different in base station side.
To according to the implementation procedure of the embodiment of the invention under this mode, below obtain preprocess method through the TPC order embodiment further provided the processing procedure of base station side.Fig. 6 has provided the flow chart of this processing procedure, and is as shown in Figure 6, comprises following processing:
Step S602: the base station is to the terminal broadcast system message; And in system message, carry power control step-size parameter (TPC step size); For example; Can (SystemInformation Block 2 carries the power control step-size parameter in ascending power common control information unit SIB2), and the terminal can use this power control step-size parameter to confirm the form of uplink power control group signaling (with reference to above-mentioned steps S402) at System information block 2;
Step S604: high-level signaling is sent to the terminal in the base station, and in high-level signaling, carries and be used to detect the required Group-RNTI of uplink power control group signaling (with reference to above-mentioned steps S404);
Step S606: terminal iidentification (Cell-Radio NetworkTemporary Identity is sent to the terminal in the base station; C-RNTI); For example, can connect reconfiguration message through the RRC in random access procedure or the handoff procedure and send (with reference to above-mentioned steps S406).
Afterwards, end side can adopt above-mentioned mode two to confirm index information, and then the position of definite TPC in uplink power control group signaling.
(4) step S408
In this step, the terminal is at first carried out blind Detecting according to Group-RNTI to the channel of the uplink power control group signaling of carrying the form of confirming among the step S402; When detecting when having corresponding with Group-RNTI uplink power control group signaling; The position of the TPC order of confirming the terminal according to the form (for example, being the TPC of 1 bit or the TPC of 2 bits) of index information and uplink power control group signaling in detected uplink power control group signaling.
For the ease of describing; In above description process, used the mode of step number, should be appreciated that above-mentioned steps number is not used in carries out any restriction to implementation procedure of the present invention; For example; For each information that need obtain in order to confirm the TPC position, can carry out with the order of any appropriate, and the sequencing that is not limited to relate in the foregoing description.
Based on foregoing, below further combine instance of the present invention to describe technical scheme of the present invention.
Instance 1: the sub-district is used for the power control of PUCCH channel through the TPC order that the signaling DCI format of uplink power control group 3 sends terminal A, is applicable to that RRC connects to set up scene.
Fig. 7 has provided the processing in this instance, and is as shown in Figure 6:
System broadcast message is passed through at the terminal; Be that ascending power common control information unit (Uplink Power Control Common) in the System information block 2 (SIB2) obtains TPC stepsize parameter, and know that according to this parameter this moment, uplink power control group signaling adopted DCIformat 3.
The ascending power dedicated control information unit (Uplink Power ControlDedicated) that (RRC connectionset up) message connect to be set up through the RRC in the special RRC signaling in the terminal obtains the Group-RNTI that is used to detect DCI format 3 signalings that own TPC order belongs to; This Group-RNTI through implicit coded system to CRC that should DCIformat 3 signalings; In addition; Because the Group-RNTI that the terminal is notified is TPC-PUCCH-RNTI, so the terminal knows that the TPC of oneself orders the power control that is used for the PUCCH channel among the DCI format 3.
The terminal is in obtaining the identical information unit of Group-RNTI; Promptly; From the ascending power dedicated control information unit of RRC connection foundation (RRC connection set up) message, obtain index, i.e. TPC-PUCCH-Index in the group of its TPC order in corresponding DCI format 3 signalings of TPC-PUSCH-RNTI.
The terminal is carried out blind Detecting according to the TPC-PUCCH-RNTI that receives to the DCIformat among the PDCCH 3; When the TPC-PUCCH-RNTI of the RNTI of the DCI format 3 that detects through CRC and notice is identical; Include the TPC order that is used for the control of PUCCH power at this terminal among this DCI format 3 of terminal judges, and further confirm one's own TPC order among the DCI format 3 through TPC-PUCCH-Index.For example; Load according to present DCI format 3/3A; Index adopts 5 bits in the group, if this terminal TPC-PUCCH-Index is 00011, representes that then the TPC order at this terminal is the 4th order among the DCI format 3; Because DCI format 3 stipulates that each TPC order comprises 2 bits, then the 7th among the DCI format 3 and the 8th bit are its TPC orders.
Instance 2: the sub-district is used for the power control of PUCCH channel through the TPC order that the signaling DCI format 3A of uplink power control group sends terminal A, is applicable to that RRC connects to reshuffle and the sub-district handoff scenario.
Fig. 8 has provided the processing in this instance, and is as shown in Figure 7:
The terminal is through system broadcast message, and promptly the ascending power common control information unit in the System information block 2 (SIB2) obtains TPC step size parameter, and knows that according to this parameter this moment, uplink power control group signaling adopted DCI format 3A.
The terminal connects the Group-RNTI that the ascending power dedicated control information unit (Uplink PowerControl Dedicated) reshuffle (RRC connectionreconfiguration) message obtains the DCI format3A signaling that is used to detect own TPC order place through the RRC in the special RRC signaling, and this Group-RNTI is through implying coded system to CRC that should DCI format 3A signaling; And the Group-RNTI that the terminal is notified is TPC-PUCCH-RNTI, thereby knows that the TPC order of oneself is to be used for the control of the power of PUCCH channel among the DCI format 3A.
The terminal is in obtaining the identical information unit of Group-RNTI; Promptly; The TPC that from the ascending power dedicated control information unit of RRC connection reconfiguration message, obtains oneself orders index, i.e. TPC-PUCCH-Index in the group in the corresponding DCI format 3A signaling of TPC-PUSCH-RNTI.
The terminal is carried out blind Detecting according to the TPC-PUCCH-RNTI that receives to the DCIformat 3A among the PDCCH; When the TPC-PUCCH-RNTI of the RNTI of certain the DCI format 3A that detects through CRC and notice is identical; The TPC order that is used for the control of PUCCH power at this terminal is confirmed to include among this DCI format3A in the terminal, and further confirms one's own TPC order among this DCI format 3A through TPC-PUCCH-Index.For example; Load according to present DCI format 3/3A; Index adopts 5 bits in the group, if this terminal TPC-PUCCH-Index is 00001, just representes that the TPC order at this terminal is the 2nd order among the DCI format 3A; Because DCI format 3A stipulates that each TPC order comprises 1 bit, then the 2nd bit among the DCI format 3 is its TPC order.
Instance 3: the sub-district is used for the power control of PUCCH channel through the TPC order that the signaling DCI format of uplink power control group 3 sends terminal A, is applicable to that RRC connects to reshuffle and the sub-district handoff scenario.
In this example, suppose that DCI format 3 comprises the TPC order at 14 terminals at most, that is to say that the pay(useful) load of DCI format 3 is 28 bits, that is, and Nmax=14, P=28.
Fig. 9 has provided the processing in this instance, and is as shown in Figure 8:
The terminal is through system broadcast message, and promptly the ascending power common control information unit in the System information block 2 (SIB2) obtains TPC step size parameter, and knows that according to this parameter this moment, uplink power control group signaling adopted DCI format 3.
The terminal connects the Group-RNTI that obtains DCIformat 3 signalings that are used to detect own TPC order place in the ascending power dedicated control information unit (Uplink PowerControl Dedicated) reshuffle (RRC connectionreconfiguration) message through the RRC in the special RRC signaling, this Group-RNTI is through implying coded system to CRC that should DCI format 3 signalings; And the Group-RNTI that the terminal is notified is TPC-PUCCH-RNTI, thereby knows that the TPC of oneself orders the power control that is used for the PUCCH channel among the DCI format 3.
The terminal obtains the particular terminal identify label (C-RNTI) of base station assigns in random access procedure or in the RRC that the switches connection reconfiguration information.In base station side; Need carry out restrictive group management method to the C-RNTI at the terminal in the DCIformat 3; Promptly; The base station is distributed conditionally and is no more than 14 terminals and on DCI Format 3, sends crowd's TPC order as a group, and is unequal mutually to 14 deliverys with the C-RNTI at terminal in the assurance group, promptly do not have the value of repetition.
The terminal is carried out blind Detecting according to the TPC-PUCCH-RNTI that receives to the DCIformat among the PDCCH 3; When the TPC-PUCCH-RNTI of the RNTI of certain the DCI format 3 that detects through CRC and notice was identical, the TPC that is used for the control of PUCCH power that includes this terminal among the terminal judges DCI format 3 ordered.
The terminal is again through confirming its TPC position in DCI format 3 with C-RNTI mod 14.For example; Value behind the C-RNTI mod 14 at terminal is 3; The TPC at this terminal order (is annotated: as stated for the 4th among the DCI format 3 so; Value is the 1st of 0 expression) because each TPC order comprises 2 bits, the terminal confirms that the 7th among the DCI format3 is that its TPC orders with the 8th bit so.
As stated; By means of the present invention; The method that provides the terminal how from DCI format 3/3A, to obtain its DPC guarantees that the terminal can obtain its DPC accurately and effectively from group's power control signaling that the base station issues, thereby makes the base station can carry out uplink power control flexibly and effectively.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. transmission power control command acquisition methods, is characterized in that said method comprises based on uplink power control group signaling mechanism:
The terminal obtains the power control step-size parameter through the system message of broadcasting, and confirms the form of uplink power control group signaling through said power control step-size parameter;
Said terminal obtains through high-level signaling and detects the required interim group identification of wireless network of uplink power control group signaling that comprises its power control command;
Said terminal obtains through said high-level signaling or predetermined process and is used for identifying the index information of the transmission power control command at said terminal in the position of uplink power control group signaling;
Said terminal obtains the transmission power control command that belongs to said terminal according to form, the interim group identification of said wireless network and the said index information of the said uplink power control group signaling of confirming from uplink power control group signaling.
2. method according to claim 1 is characterized in that, said terminal obtains the index information of transmission power control command in the position of uplink power control group signaling that is used for identifying said terminal according to predetermined process and is specially:
Said terminal obtains the terminal iidentification of base station assigns;
The maximum terminal quantity that said uplink power control group signaling can be carried is confirmed according to the form of the pay(useful) load of uplink power control group signaling and uplink power control group signaling in said terminal;
Said terminal is confirmed said index information through using said terminal iidentification to said maximum terminal quantity delivery; Wherein, Base station side is carried out the terminal iidentification that distributes in advance and is distributed control, makes that each terminal iidentification that distributes is different to the result of maximum terminal quantity delivery.
3. method according to claim 2 is characterized in that, when the form of said uplink power control group signaling is descending control information format 3; Said maximum terminal quantity=floor (P/2); When the form of said uplink power control group signaling is descending control information format 3A, said maximum terminal quantity=P, wherein; P is said pay(useful) load, and floor () expression rounds downwards.
4. method according to claim 1; It is characterized in that the interim group identification of said wireless network comprises interim group identification of wireless network that is used for the control of Physical Downlink Control Channel PUCCH power and the interim group identification of wireless network that is used for the control of Physical Uplink Shared Channel PUSCH power.
5. method according to claim 4 is characterized in that, said terminal obtains the required interim group identification of wireless network of channel that detects carrying uplink power control group signaling through high-level signaling and specifically comprises:
Said terminal judges that according to the cell that carries the interim group identification of wireless network the interim group identification of said wireless network is used for the interim group identification of wireless network of PUCCH power control or is used for the interim group identification of wireless network that PUSCH power is controlled; Wherein, the interim group identification of wireless network of the said PUCCH of being used for power control uses different cells to carry respectively with the interim group identification of wireless network that is used for the control of PUSCH power; Perhaps
Said terminal judges that according to the group under the interim group identification of wireless network that obtains the interim group identification of said wireless network is used for the interim group identification of wireless network of PUCCH power control or is used for the interim group identification of wireless network that PUSCH power is controlled; Wherein, Base station side is grouped into the interim group identification of wireless network that the interim group identification of wireless network that is used for PUCCH power control still is used for the control of PUSCH power with the interim group identification of wireless network in advance, and uses same cell to carry the interim group identification of wireless network of the said PUCCH of being used for power control or be used for the interim group identification of wireless network of PUSCH power control.
6. method according to claim 1 is characterized in that, said index information comprises PUCCH power control command index information and PUSCH power control command index information.
7. method according to claim 6 is characterized in that, said PUCCH power control command index information and said PUSCH power control command index information use same index value to represent.
8. according to each described method in the claim 1 to 7; It is characterized in that said terminal confirms that according to form, the interim group identification of said wireless network and the said index information of the said uplink power control group signaling of confirming the position of transmission power control command in uplink power control group signaling at said terminal specifically comprises:
Said terminal is carried out blind Detecting according to the interim group identification of said wireless network to the channel of the uplink power control group signaling of carrying definite said form;
When detecting corresponding with the interim group identification of said wireless network uplink power control group signaling, the position of the transmission power control command of confirming said terminal according to the form of said index information and said uplink power control group signaling in detected said uplink power control group signaling.
9. according to each described method in the claim 1 to 7, it is characterized in that said high-level signaling comprises: radio resource control signaling and media access control layer signaling; Wherein, said radio resource control signaling comprises: message and Radio Resource control reconfiguration message are set up in Radio Resource control.
10. a transmission power control command obtains preprocess method, based on uplink power control group signaling mechanism, it is characterized in that, comprising:
To the terminal broadcast system message, and in said system message, carry the power control step-size parameter, said power control step-size parameter is used for the form that uplink power control group signaling is confirmed at the terminal;
Send high-level signaling to said terminal, and in said high-level signaling, carry and be used for detecting the required interim group identification of wireless network of uplink power control group signaling and be used to identify the index information of the transmission power control command at said terminal in the position of uplink power control group signaling.
11. method according to claim 10 is characterized in that, in the ascending power common control information unit of said system message, carries said power control step-size parameter.
12. method according to claim 10; It is characterized in that; When said high-level signaling is radio resource control signaling,, Radio Resource control carries interim group identification of said wireless network and said index information in setting up the ascending power dedicated control information unit of message or Radio Resource control reconfiguration message.
13. method according to claim 12; It is characterized in that; The interim group identification of said wireless network comprises interim group identification of wireless network that is used for the control of PUCCH power and the interim group identification of wireless network that is used for the control of PUSCH power; Wherein, Two cells are set in said radio resource control signaling carry interim group identification of wireless network that is used for the control of PUCCH power and the interim group identification of wireless network that is used for the control of PUSCH power respectively, perhaps, a cell is set in said radio resource control signaling is used to carry interim group identification of wireless network that is used for the control of PUCCH power or the interim group identification of wireless network that is used for the control of PUSCH power.
14. a transmission power control command obtains preprocess method,, it is characterized in that said method comprises based on uplink power control group signaling mechanism:
To the terminal broadcast system message, and in said system message, carry the power control step-size parameter, said power control step-size parameter is used for the form that uplink power control group signaling is confirmed at the terminal;
Send high-level signaling to said terminal, and in said high-level signaling, carry and be used to detect the required interim group identification of wireless network of uplink power control group signaling;
Send terminal iidentification to said terminal; So that index information is confirmed according to the maximum terminal quantity in said terminal iidentification and the pairing group of signaling of said uplink power control group in said terminal; Wherein, said index information is used for identifying the position of the transmission power control command at said terminal in uplink power control group signaling.
15. a portable terminal is characterized in that, comprising:
First acquisition module is used for obtaining the power control step-size parameter through the system message of broadcasting;
First determination module is used for confirming through the said power control step-size parameter of obtaining the form of uplink power control group signaling;
Second acquisition module is used for obtaining the required interim group identification of wireless network of uplink power control group signaling that detection comprises its power control command through high-level signaling;
The 3rd acquisition module is used for obtaining through said high-level signaling or predetermined process and is used to identify the index information of the transmission power control command at said terminal in the position of uplink power control group signaling;
The 4th acquisition module, the said index information that the said form that is used for confirming according to said first determination module, the interim group identification of said wireless network that said second acquisition module obtains and said the 3rd acquisition module obtain obtains the transmission power control command that belongs to said portable terminal from uplink power control group signaling.
16. portable terminal according to claim 15 is characterized in that, said the 3rd acquisition module further comprises:
Obtain submodule, being used to obtain the base station is the terminal iidentification that said portable terminal distributes;
Confirm submodule, be used for confirming the maximum terminal quantity that said uplink power control group signaling can be carried according to the form of the pay(useful) load of uplink power control group signaling and uplink power control group signaling;
Calculating sub module is used to use said terminal iidentification that said maximum terminal quantity is carried out modulo operation, and confirms said index information according to the result of modulo operation.
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102281592B (en) * | 2010-06-12 | 2013-10-23 | 中国普天信息产业股份有限公司 | Method and device for transmitting transmission power control command |
| CN102378334B (en) * | 2010-08-12 | 2015-08-12 | 中兴通讯股份有限公司 | The method and system of acquiring size of closed loop power control region |
| US8514826B2 (en) | 2010-11-02 | 2013-08-20 | Lg Electronics Inc. | Method and apparatus for transmitting control information in radio communication system |
| KR101216064B1 (en) * | 2010-11-02 | 2012-12-26 | 엘지전자 주식회사 | Method and apparutus for transmitting control information |
| CN102917436B (en) | 2011-08-02 | 2017-03-15 | 上海贝尔股份有限公司 | The method for carrying out uplink power control in the heterogeneous network of common cell ID |
| CN103095444B (en) * | 2011-11-07 | 2016-05-11 | 上海贝尔股份有限公司 | Based on the method and apparatus of multi-user MIMO transmissions sending and receiving Downlink Control Information |
| KR102202333B1 (en) | 2013-01-26 | 2021-01-13 | 엘지전자 주식회사 | Method for receiving downlink control information by ue in wireless communication system, and apparatus for same |
| CN104348601B (en) * | 2013-08-08 | 2017-06-23 | 北京久华信信息技术有限公司 | A kind of transmission method of wireless communication system ascending control information |
| CN104125588B (en) * | 2014-08-13 | 2017-09-29 | 武汉邮电科学研究院 | A kind of method and device of LTE system uplink power control |
| US10798685B2 (en) * | 2015-05-27 | 2020-10-06 | Qualcomm Incorporated | Cyclic redundancy check for uplink control information on control and data channels |
| CN109963329B (en) * | 2017-12-25 | 2022-08-09 | 成都鼎桥通信技术有限公司 | Method and system for sending uplink power control command in LTE cell |
| US10757656B2 (en) * | 2018-04-05 | 2020-08-25 | Qualcomm Incorporated | Loop index and time gap for group power control |
| EP4268516A4 (en) * | 2020-12-24 | 2024-02-28 | Zte Corp | Multi-beam transmission signaling for uplink communication channels |
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| EP1137228A2 (en) * | 2000-03-24 | 2001-09-26 | Nec Corporation | Link state routing techniques |
| CN101136666A (en) * | 2006-08-28 | 2008-03-05 | 华为技术有限公司 | Method and apparatus for implementing transmission power control |
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| EP1137228A2 (en) * | 2000-03-24 | 2001-09-26 | Nec Corporation | Link state routing techniques |
| CN101136666A (en) * | 2006-08-28 | 2008-03-05 | 华为技术有限公司 | Method and apparatus for implementing transmission power control |
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